Closing arrangement for discharging the exit-orifices of silos and the like which are closed by means of a curtain.



E. ZUBLIN. CLOSING ARRANGEMENT FOR DlSCHARGiNG THE EXIT ORIFICES 0FSILOS AND THE LIKE WHICH ARE CLOSED BY MEANS OF A CURTAIN.-

APPLICATION FILED JULY 3,1914- 1,173,333. Patented Feb. 29,1916.

THE COLUMBIA PLANOLIRAPH 90., WASHINGTON, D cl EDUABED Z'UBLIN,

CLOSING ARRANGEMENT FOR DISCHABGING THE EXIT-ORIFICES OF SILOS AND WHICHARE CLOSED BY MEANS OF A CURTAIN.

LIKE

OF STRASSBURG, GERMANY.

THE

Patented Feb. 29, 1916.

Application filed July 3, 1914. Serial No. 843,981.

To all whom it may concern Be it known that I, EDUARD ZiinLrN, a citizenof Switzerland, and residing at Finkmattstrasse 25, Strassburg inAlsace- Lorraine, Germany, have invented certain new and usefulimprovements in a closing arrangement for discharging the exit-orificesof silos and the like which are closed by means of a curtain, of whichthe following is a specification, reference being had therein to theaccompanying drawing.

It is the object of the present invention to provide a closure for theexit orifices of silos and the like, as for instance, described in myPatent No. 1,0615? 9 of May 13, 1913, with a regulating plate forenabling the regulation of the size of the orifice in accordance withthe properties of the material to be discharged and with its size,specific gravity and form. It will be clear that the bigger the piecesof the material are, the larger the orifice and the larger the specificgravity of said material is, the smaller the orifice needs to be, in thefirst instance in order to avoid a pressure too excessive on the curtainor net, and in the latter, in order to avoid the discharge of too largequantities of the material.

A further object of the invention is to do away with grates and toarrange the curtain in such a manner that it alone forms the closure.

With this and other objects in view the curtain is suspended from thehighest point of the outlet opening and is provided with weights on itsrear side allowing the regulation of the tension of the curtain in orderto allow, if desired, the discharge of coarser material while materialof smaller size is discharged through the orifice.

In the accompanying drawing: Figure 1 is a longitudinal section of theclosure taken on line AB of Fig. 2. Fig. 2 is a front view of theclosure. Fig. 3 is a detail view of the operating elements. Fig. 4 is asection through the regulating plate and its operating parts.

The silo a is provided with a funnelshaped outlet 7), the somewhatextended. A plate cl is closing the outlet dust pipe. This plate (l issliding in grooves e and is provided with holes f allowing theregulation of the width of the outlet. The sliding of the plate isefiected by means of a nose or projection g which lower side 0 of whichis enters the holes f and which is operated by the actuation of a leverh. The projection g is movably arranged within a hood 2' which isswinging around the axle 7c and is also connected with the lever h. Theoperation of the projection g is effected by means of a rod Z and anangle lever m. The plate is locked in its adjusted position by means ofa stop a entering the holes 7 and a hole provided in the guide providedwith the channel c. The curtain 0 is suspended from a stationary part pby means of chains and this part is located a certain distance above thehighest point of the outlet opening. free space q in front of the outletopening serves for the reception of the goods being pressed backwardduring the act of closing. Chains are connected to the ends 1' and s ofthe curtain and are carrying weights to. Each chain may carry a separateweight or a common weight may be provided for both chains. The chain tis running over a drum w which is turned from a shaft y by theintermediary of a coupling 00 and serves the purpose of raising theweights a. By exerting a pull on the rod 2 the coupling disk 00 isconnected up with a driving gear (not shown in the drawing) and theweight a is raised. By raising this weight the curtain 0 is raised andthe opening created thereby is of a size proportionate to the height towhich the weight is raised. The weight may be raised steadily and inthis manner the size of the opening of the curtain may be continuouslyincreased or, a certain width of the opening may be maintained for acertain time by suitably stopping the raising of the weight at a certainelevation. The driving gear for winding up the weight a and the couplingrod 1' are to be actuated from one point in order to time the motion ofthe weight and the coupling to answer all conditions of the material tobe discharged with respect to its size, form and specific weight. Theslide cl can also be moved at any time during the working of the devicein order to regulate the size of the opening in cases of changes-in theproperties of the material, correspondingly.

What I claim is 1. A closure for silos comprising in combination withthe tunnel constituting an outlet, a sliding plate adapted to regulatethe size of said outlet in accordance with the size of the material tobe discharged, means a point above the funnel ralsmg said curtaincomprising a clutch mechanism, and a. shaft, and means for regulatingthe size of the opening of the curtain in harmony With the size of thematerial to be discharged, substantially as described.

In testimony whereof I aflix my signature in presence of two Witnesses.

EDUARD ZUBLIN. \Vitnesses i DR. SIEGFRIED HAUsER, JACOB W. SCHMIDT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of'Patents. Washington, D. C."

